Corrected entry: When Leonidas visits the wise men and the Oracle at the top of the mountain, one of them mentions that it was August, and that Sparta wouldn't fight in that time of the year. August wasn't so named until 8 B.C after Caesar Augustus. Since this movie is set in 480 B.C., the month of August would not have existed yet.
Corrected entry: When the Persian messenger waits by the large well for the Spartan king to contemplate submission or otherwise, the Spartan king looks at a woman hugging a little girl. The Spartan woman appears to be wearing a modern day cupped bra under her clothing.
Corrected entry: In the scene with the rhino, the rhino kills three Persians. The first just happens to be in the way, and the second one tries to run away, but the third Persian actually jumps into the front of the rhino just in order to get killed. (01:09:50)
Corrected entry: In the closing scene of 300, where Dilios is looking out across the field, one of the Spartans behind him can be seen breaking ranks to deliberately peek at the camera. This occurs at the moment when Dilios says "sheer terror gripping tight." As if realizing his mistake, he quickly darts back into place.
Corrected entry: In the scene where the Spartans are watching the Persian ships being destroyed during the rain storm, the camera pans in towards Leonidas while the Spartans cheer in the background. There's a man three rows back holding both hands in the air with mouth wide open wearing modern day clothes and headphones around his neck.
Corrected entry: When we see the 300 leaving for the Hot Gates, they are carrying their sword, spear and shield. However, once they engage the Persians, all of them have helmets. Where did they come from? Even if there were a few blacksmiths among the Arcadians, where would they get the steel/iron to make helmets?
Corrected entry: The film was shot in only 60 days.
Corrected entry: Leonidas gets a cut that runs from above his left eye, all the way down to past his cheekbone during his battle with the Uber Immortal. During many shots of Leonidas you can see that the cut is on his lower eyelid, yet when they show him at the end of the movie (the shot before he takes his helmet off) he just has the scratch above his eye. You can see at least 1/2 of an inch below his eye, but there's no sign of a scratch. When Leonidas takes his helmet off, the scratch is there beneath his eye and goes all the way up to his eye.
Corrected entry: The Persians are shown as revering their emperor as a "god-king". Not true - they were known for being monotheistic (believing in one god) which meant that they did not see kings as gods at all. It was the Greeks who were polytheistic (believing in many gods).
Corrected entry: In this movie, Xerxes is told to have employed war elephants against the Spartans. The Greek - along with the Macedonians - actually never encounter elephants until the Battle of Gaugamela, in 331 BC - 149 years later.
Corrected entry: When the Spartans are watching the Persian ships being destroyed by the wind/waves you see Leonidas holding his shield up to protect himself from the rain. The rain is blowing toward him from his left as though driven by the wind, but his cape is not moving. The "rain" is sprayed on an angle not pushed by wind.
Corrected entry: When the bald headed leader of the other army is about to leave the Spartans you can see the circular scar on his arm from the old polio type shots.
Corrected entry: At one point of the movie, a Spartan complains about Persians using arrows, as it's quite cowardly to kill your opponent from a distance. Yet, before the first big battle a Persian asks the Spartans to lay down their weapons, only to be killed by a spear thrown at him. Are Spartans applying double standards here?